Headlight.



U. WINJION.U

V HEADLIGHT. APPLICAUON man MAR.27. |916.

l ,QT 91,06 l Patented Septpl, 1918.

of the invention, such as will enable others` i' defined inthe` claims.

lights for t UNITED STATES PATENT cierren.

OVERTON vvnvsToN, or MINNEAPoLIs, mmvasora.'

HEADLIGHT.

To all whomlzt may camera:

Beit known that I, OVERTON lVINsToN,

e a citizen of the United States, residing at Minneapolis, inthe county of Hennepin and State of Minnesota, have. invented certain new and useful Improvements in Headlights; and I do'hereby` declare the following to be a full, clear, and exact description skilled inthe art to which it appertains to make and use the samet Fig. 3 is a transversesecton taken on the line ai of ,Fig 1;. f i i elevation of the shank i or sleeveportiomofthe electric lamp;

lar; and

ordinary headlight, mobiles.

respectively,

:light bulb 4 is ofthe two filament type, i5A

:of its filaments.

lnated at 5 and 5 are formed as a continuous Figu5fis a front end elevation showing one'of theshells or sections of thel lamp socket and its adjustable lamp holdingcol- Fig. 6 is an airial section of'the Leccentric lainp holding collar.

.The numeral 1 indicates-the ease fj an s uch as used on auto- The numerals 2 and 3 mdicate,

glass plate of the headlight; The electri an lves novel features in the `arrangement inv The said filaments desigfilament, the`ends 'thereof;beingconnected to electrodes 6 and 7 and the intermediate portion thereof being connectedto a central electrode 8.

'' In the electric'connections shown,

the socalled electrodes 6,- 7 and 8 are directlycon- A nected to the wires 6**,7 and 8", respectively,

in lthe shank of the bulb, and the said'wires are adapted to be connected, respectively,

Specification o f LettersPatent. Application med March 27"; 191e. serial No. 86,852.

from the other. ya battery or other source of electrical enthe reflector and. the lens orV block.

.to circuit wires 6", 7", and 8", through contacts which-will now be described.

The wire 6"' is connected to an axially lo#- 4Patented sept. 17, 191g).v

cated contact 9,- the wire 7a is connected to -a contact ring 10 and the wire 8 is connected to the contact sleeve 11. The sleeve.

1l surrounds the shank of the bulb Vin the usual way and the said contacts 11, 9 and 10- are concentrically located and insulated, one The numeral 12 indicates orgy, one side ofwhich is connected tol the 10 and 11 on the lam `will be described after' -lead wire 8" and the other -sideof vvhich'is.'l i

having first describe the construction ofthe said lamp socket.

The lamp socket comprises two telescop ing cylindrical shells 15 and 16 and a lamp holding; collar 17. .The outer shell 15 isy shown as screw-threaded into the sleeve-like'4 hub of an annular anchor plate 18 that is soldered, welded, or otherwise. rigidlyise-l cured to the'backof a reflector immediately 1` surrounding an annular passage provided `in the latter ,for clearance of the said sleeve movementsfbut against rotary movements within tleshell 15, as shown, by means of a key lug 1,9 on said inner shell that works in a longitudinal slot 2O in said outer shell.

The holding collar 17 has an eccentric flange .24 that is rectangular in cross section, and

cannot rotate in respect to the, said The threaded stem 23 works with threaded engagement in a tubular shaft 25 thatis provided at its front end with disklike head 26 swiveled in the extreme rear end of the outer shell 15. The shaft 25 projects axially through a bearing 1 on the back df the lamp casing 1, and terminates in a knurled head 27 by means of which it may be easily rotated. A light spring finger 28 anchored on the bearing 1 engages the head 27 t0 hold the shaft 25 a'gainst acci dental rotation. The numeral 29 indicates hence,

-16.v The inner shell 16 is held for sliding block 22 that has a. rigidly a detachable cap which, as shown, covers the head 27 and is screwed onto the hub of the bearing 1*.

The above noted stems 23 and'24 are n1- sulatcd, one from the other, and on the said contact stein 24 is a slidable non-rotary insulating disk or contact carrier 30. On the front face of this contact carrier 30 is a divided electric contact 3l, which, however, operates as a single contact.

The above noted circuit lead wire 6* is connectedto the axial contact stem 24, while the lead or. wire 7b is connected Ato the dil grooves 33.

When the lamp is inserted into the holding collar 17 of the socket, and its 'lugs 32 are Aengaged with the corrugations 34, such engagementwill be yieldingly maintainedby the forwardly springpressed contacts 24 and f 31. lli-hen the lamp is rotated While its lugs are thus engaged with the said corrugations, the eccentric. Q1 will bei rotated with the lamp and the hot spot of the filament 5 may be adjusted through a circle that will carry it toward and from the axis of the reflector. When, however, the lamp is pressed rearward and then rotated, the collar 17 will not'V be rotated, out the lamp will rota-te within the said collar, and by such adjustments, the two filaments 5 and 5tl may be properly set in the same` vertical plane, that is, the latter directly over the former. 'If the lamp be pressed rearward and thenheld against rotation, the collar' 17 then may be rotated and the lamp adjusted' in a pla e transversely of the axis of the reflector wit out changing the position of the filaments, in respect to avertical position. By these compound iribtary adjustments of the lamp and collar, the hot spot of the main or relatively high power filament 5 may be alwajia'properly set 1n" respect. to the' axis of the reflector. To .seb the lamp filament at the focal center ofthe' reflector, the adjusting shaft 25 is rotated, thereby' moving t-he inner shell 16, adjusting collar 17 and lamp bulb axially of thereflector until thel desired adjustment is accomplished.

The t-wo filament light bulb involves novel Construction in the arrangement of its filaments, and its novel relative arrangement of circuit connections therefor, but these are y features not herein claimed, but which are made the subject matter of a companion ap'- phcation, S. N. 169,203, filed of dateMay 17, 1917, and entitled Headlights.

a corrugated or 'ent rotary adjustments therein;

Wha-t I claim is:

1. The combination with' a reflector and a' axis and the other radially offset from the A axis of said reflector.

2. The combination with a reflector, and a socket located axially thereof, of an` elect-ric light bulb rotatively adjustable in said socket, having interlocking engagement therewith and arranged to be operatively set in different rotary positions, said bulb having two diametrically extended filaments, one at the axis and the other radially offset from the axis ofsaid'reflector, said bulb, on its shank, having three radially spaced contacts electrically connected to said two fila A ments and said. socket having three radially spaced electrical contacts coperating with the electrical contacts of said bulb and arranged to maintain circuits through said filaments in the various rotary adjustments of said bulb, the contacts of said bulb being movable overthe contacts of said socket,

when said `bulb is rotatively adjusted.

3. The combination with a reflector and a coperating socket, of a holding .collar rota tively adjustable in said socket, an electric light bulbhaving interlocking engagement with said collar and 'arranged to be opera.- tively set and electrical-ly. connected in differ having t'w o filaments, one at the axis and the other radially offset `from the axis of said reflector.

4. The combination with a reflector and,

coperating socket, an eccentric holding co1- lar rotativelyadjustable insaid socket, and an electrlc light bulb having 'interlocking engagement with said collar and arranged to` be operatively set and electrically connected 1n different rotary-adjustments in respect to said collar, vsaid bulb having two filaments, one at the axis and the other radially offset from the axis of said reflector.

5. The combination with a reflector, of a lamp socket comprising telescopic sections,

said bulb one of which is fixed andthe other of which is axially movable, an insulating bodywithin .the said movable section, an angular contact stem projecting axially forward from said insulating body, a non-rotary insulating disk slidable on said contact stein, an elect ric con tact on said disk. an electric circuit having one lead connected to said contact stem. one to the contact on said insulating disk and the other to thefnietallic bodyof said socket,

and a two-filament lamp supported b v said socket and provided with three concentric contacts, one engageublc withl said contact stem, one with the contact on saidinsulating disk and the other electrically connected to within said outer shell, an eccentric sleeve adjustable axially therewith, a threaded stem in respect to said inner shell, and an adjusting shaft swiveled tosaid outer shell and having threaded engagement With said threaded stem for adjusting said inner shell the metallic body of'said socket.

' 6. 4The combination with a refiector, of a lamp' socket comprising a positively fixed outer shell, an inner shell adjustable axialiy swiveled in the end of said inner shell and adjustable axially therewith.

` 7. The eombination `with a. reflector, of a. 410 lamp socket comprising a positively fixed outer shell, an inner shell adjustab le axially Within said outer shell, an eccentric sleeve swiveled in the end of said inner' shell and andparts carried therewith axially f the reflector.

In testimony whereof I ax my signature in presence of two Witnesses.

OVERTON WINSTON. Witnesses A BERNxcr. G. WHEELER, HARRY D. KILGORE. 

